January 31, 2001

Kartchner Caverns: Humidity

This cave is very wet and its formations are still growing, so park officials use everything from misting systems to airlock doors to counteract and keep out the dry desert air of Arizona.

January 30, 2001

Kartchner Caverns: Intro

Besides being beautiful, the Kartchner Caverns are also 95% alive, which means that the caves are wet and that their formations are still growing.

January 29, 2001

Listener Initiative

Pulse of the Planet wants to know how you observe the changing seasons and special times of year. Give us a call at 1-877-PULSE99, and your story may be featured on Pulse.

January 26, 2001

Ice Cores: Time Capsules

Scientists are able to use ice capsules to study ancient air that was trapped during their formation.

January 25, 2001

Ice Cores: Intro

Scientists are able to use the rings of an ice core like the rings of a tree — they are windows into the past that aid the study of climate changes.

January 24, 2001

Antibiotics in Ancient Bone: Tetracycline

Scientists have discovered traces of tetracycline in preserved human bones from Sudan that date back more than 2,000 years.

January 23, 2001

Antibiotics in Ancient Bone: Beer

Take two beers and call me in the morning? Scientists now think that some ancient civilizations may have used bread and beer as a source of antibiotics.

January 22, 2001

Antibiotics in Ancient Bones

Traces of tetracycline have been found in the bones of people who lived more than 2,000 years ago, and scientists think that their diet may have been the cause.

January 19, 2001

Black Holes: X-Ray Emission

Black holes send off x-rays, and by translating the x-rays that we receive into pressure waves, we can recreate the sounds of a black hole.

January 18, 2001

Black Holes: Detection

Scientists trying to solve the mystery of black holes are facing one big question. How do you even find a black hole to begin with?

January 17, 2001

Bulwer’s Pheasant: Legend

According to the Dyak people of Borneo, the Bulwer’s pheasant shows the bearded pigs where they can find food and, in return, the pigs dig up worms and grubs for the Bulwer’s to eat.

January 16, 2001

Bulwer’s Pheasant: Risk

The destruction of the Borneo rainforest is bringing the Bulwer’s pheasant closer to extinction.

January 15, 2001

Bulwer’s Pheasant: Zoo

When it’s mating season in the bird area of the Bronx Zoo, love is in the air. In fact, you can even hear it being played over the loudspeakers.

January 12, 2001

The Moon: Face

Who is that man on the moon? If you’re a scientist, that face isn’t much of a mystery — it’s a record of the moon’s history.

January 11, 2001

The Moon: Earthquakes

The gravitational pull of the moon causes our tides to rise and fall, and scientists think that it may have an influence on earthquake activity as well.

January 10, 2001

The Moon: Ring

If you look into the heavens tonight, you just might see a ring around the moon.

January 9, 2001

The Moon: Winter Full Moon

Tonight’s full moon is known as “The Cold Moon”, because of the season, and this winter chill can make the moon seem a little bit brighter than usual.

January 8, 2001

The Moon: Changes

From appearance to position in the night sky, the moon goes through changes that are especially noticeable during these winter months.

January 5, 2001

Lunar Solar Power: Taking the Lid Off Earth

Solar power from the moon may be the least expensive and the most environmentally responsible way to power the Earth .

January 4, 2001

Lunar Solar Power – Silicon Moon

By using silicon on the moon to build solar panels, we could efficiently power the entire planet with solar energy captured on the moon.

January 3, 2001

Lunar Solar Power – Energy for the World

If we use the moon to capture power from the sun, there would be more than enough energy to discontinue the use of fossil fuels.

January 2, 2001

Lunar Solar Power – Intro

Solar power from the moon? Scientists are hoping to set up solar panels on the moon to collect energy which will be beamed to earth.

January 1, 2001

Hawaiian-Japanese New Year – Food

For one listener who grew up in Hawaii, New Year’s day always meant a feast of traditional Japanese foods.